JP2015512141A - Method for forming a joint between magnesium diboride conductors - Google Patents

Method for forming a joint between magnesium diboride conductors Download PDF

Info

Publication number
JP2015512141A
JP2015512141A JP2014552536A JP2014552536A JP2015512141A JP 2015512141 A JP2015512141 A JP 2015512141A JP 2014552536 A JP2014552536 A JP 2014552536A JP 2014552536 A JP2014552536 A JP 2014552536A JP 2015512141 A JP2015512141 A JP 2015512141A
Authority
JP
Japan
Prior art keywords
mgb
furnace
magnesium
joint
filaments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2014552536A
Other languages
Japanese (ja)
Other versions
JP6162148B2 (en
Inventor
ムハメド・ラクリミ
Original Assignee
シーメンス ピーエルシー
シーメンス ピーエルシー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シーメンス ピーエルシー, シーメンス ピーエルシー filed Critical シーメンス ピーエルシー
Publication of JP2015512141A publication Critical patent/JP2015512141A/en
Application granted granted Critical
Publication of JP6162148B2 publication Critical patent/JP6162148B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
    • H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
    • H01B12/06—Films or wires on bases or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/027—Parking aids, e.g. instruction means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
    • G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
    • G06V20/586—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads of parking space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
    • G06V20/588—Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/68—Connections to or between superconductive connectors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices
    • H10N60/01—Manufacture or treatment
    • H10N60/0856—Manufacture or treatment of devices comprising metal borides, e.g. MgB2
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices
    • H10N60/80—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30248—Vehicle exterior or interior
    • G06T2207/30252—Vehicle exterior; Vicinity of vehicle
    • G06T2207/30264—Parking

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Superconductor Devices And Manufacturing Methods Thereof (AREA)

Abstract

接合すべきワイヤからＭｇＢ２フィラメントを露出させるステップと、炉中でＭｇＢ２フィラメントをマグネシウム粉末およびホウ素粉末の混合物にさらすステップと、ＭｇＢ２フィラメントならびにマグネシウムおよびホウ素粉末を一緒に５４０℃を超えるまたは５４０℃程度の温度で圧縮するステップとを含む、超伝導ワイヤのＭｇＢ２フィラメント間に接合部を形成するための方法。チタンが、炉内に提供されて、炉内に存在する酸素を優先的に捕捉する。Exposing the MgB2 filaments from the wires to be joined, exposing the MgB2 filaments to a mixture of magnesium and boron powders in a furnace, and the MgB2 filaments and the magnesium and boron powders together above 540 ° C. Compressing with temperature and forming a joint between MgB2 filaments of the superconducting wire. Titanium is provided in the furnace to preferentially capture oxygen present in the furnace.

Description

二ホウ化マグネシウム（ＭｇＢ２）は、例えばＭＲＩシステムなどの撮像システムのための超伝導磁石を製作するために使用されるワイヤ中のフィラメントのような超伝導体として使用される。 Magnesium diboride (MgB 2 ) is used as a superconductor, such as a filament in a wire used to fabricate a superconducting magnet for an imaging system such as an MRI system.

ＭｇＢ２フィラメント間に十分な接合部を作ることは、困難であることが分かっている。接合部は、動作温度においてさえ超伝導にならないか、または接合部は、容認できないほど低い背景磁界強度においてもしくは容認できないほど低いしきいを超える電流が通されるときに抵抗性になる（「クエンチ現象」として知られている）。 Producing sufficient joints between MgB 2 filaments has proven difficult. The junction does not become superconducting even at operating temperatures, or the junction becomes resistive when a current is passed at an unacceptably low background magnetic field strength or above an unacceptably low threshold ("quenching" Known as "phenomenon").

ＭｇＢ２接合部を形成するための典型的な周知のプロセスは、接合すべきワイヤからＭｇＢ２フィラメントを露出させるステップと、それらを一緒に圧縮するステップと、脱ガスのための真空下で、５４０℃を超えるまたは５４０℃程度の温度で炉中のモールド中でそれらをマグネシウム粉末およびホウ素粉末にさらすステップとを含む。粉末は、混合され、結果として得られるＭｇＢ２接合部の密度を最大にするために圧縮される。例えば、２〜３０トンの重量が、粉末を圧縮するために使用されることもある。圧縮は、結果として得られる接合部が、接合部の有効性を低減することになる多孔性となるのを防止することを目指している。温度は、粉末が実際には溶融しないが、しかし効果的に圧縮できるように、マグネシウムまたはホウ素の溶融点をわずかに下回るように選択される。高温は、ＭｇＢ２を生成するための反応が妥当な速度で続くことを確実にする。 A typical well-known process for forming the MgB 2 joint includes exposing the MgB 2 filaments from the wires to be joined, compressing them together, and under vacuum for degassing 540 Exposing them to magnesium and boron powders in a mold in a furnace at a temperature above or at about 540 ° C. The powder is mixed and compressed to maximize the density of the resulting MgB 2 joint. For example, a weight of 2 to 30 tons may be used to compress the powder. Compression seeks to prevent the resulting joint from becoming porous which will reduce the effectiveness of the joint. The temperature is selected to be slightly below the melting point of magnesium or boron so that the powder does not actually melt but can be effectively compressed. The high temperature ensures that the reaction to produce MgB 2 continues at a reasonable rate.

このプロセスは、フィラメントへのＭｇＢ２の堆積をもたらし、あるワイヤのフィラメントから他のワイヤのフィラメントへと、ＭｇＢ２を含む接合部を提供する。別法では、圧力は、熱処理ステップの間維持されることもあり、または圧力は、いったん粉末が圧縮されると、熱処理ステップの前に解放されることもある。 This process results in the deposition of MgB 2 on the filament, providing a joint containing MgB 2 from one wire filament to another. Alternatively, the pressure may be maintained during the heat treatment step, or the pressure may be released prior to the heat treatment step once the powder is compressed.

そのような準備方法では、粉末は典型的には、約２５μｍ直径の粒子でできている。熱処理ステップの間に、ＭｇおよびＢは、一緒に反応して、Ｍｇ粒子の表面に約２から５μｍの厚さのＭｇＢ２の層を形成する。接合されたワイヤのＭｇＢ２フィラメント間の超伝導は、これらのＭｇＢ２の表面層を通じて起こる。圧縮ステップは、効果的な伝導経路を提供するために、粒子が密着することを確実にするために必要とされる。熱処理は、ＭｇかまたはＢの溶融点を下回る温度で、しかしＭｇＢ２を生成するための反応が妥当な速度で起こるのに十分な高い温度で行われる。 In such a preparation method, the powder is typically made of particles about 25 μm in diameter. During the heat treatment step, Mg and B react together to form a layer of MgB 2 about 2 to 5 μm thick on the surface of the Mg particles. Superconductivity between the MgB 2 filaments of the bonded wires occurs through these MgB 2 surface layers. A compression step is required to ensure that the particles are in close contact to provide an effective conduction path. The heat treatment is performed at a temperature below the melting point of either Mg or B, but high enough that the reaction to produce MgB 2 occurs at a reasonable rate.

典型的なＭｇＢ２超伝導ワイヤでは、いくつかのＭｇＢ２コアが、提供され、それぞれが、保護層、例えば鉄、またはニオブ、またはＭＯＮＥＬ（登録商標）合金の層で被覆されている。被覆コアは次いで、ＭｇＢ２コアでのクエンチの場合に機械的強度および代替電気経路を提供するために、銅ケーシング（ｃｏｐｐｅｒ ｏｕｔｅｒ）に入れられる。被覆は、ＭｇＢ２コアが銅ケーシングと反応するのを防止するため、およびワイヤの製造の間コアに機械的強度を提供するために必要である。ＭｇＢ２は、脆いことが周知であり、もし極端に曲げられるならば砕け散ることになる。 In a typical MgB 2 superconducting wire, several MgB 2 cores are provided, each coated with a protective layer, such as a layer of iron, or niobium, or a MONEL® alloy. The coated core is then placed in a copper outer to provide mechanical strength and an alternative electrical path in the case of a quench with the MgB 2 core. The coating is necessary to prevent the MgB 2 core from reacting with the copper casing and to provide mechanical strength to the core during wire manufacture. MgB 2 is well known to be brittle and will shatter if bent excessively.

従来の接合プロセスは、コアから保護層をはぎ取るステップを含んでいる。露出したコアは次いで、上で述べたように、接合のためにマグネシウムおよびホウ素粉末とともにモールド中に置かれる。別法として、保護層は、はぎ取られないが、しかしＭｇＢ２コアおよび保護層をそれぞれ含むフィラメントは、比較的大きい表面積にわたってコアを露出させるために、２°〜５°の角度などの浅い角度で切断され、または削られる。一例では、コアは、約４０ｍｍの長さにわたって露出されることもある。これらのフィラメントは次いで、上で述べたように、マグネシウムおよびホウ素粉末とともにモールド中に置かれる。 Conventional bonding processes include the step of stripping the protective layer from the core. The exposed core is then placed in a mold with magnesium and boron powder for bonding as described above. Alternatively, the protective layer is not stripped, but containing filaments MgB 2 core and the protective layer, respectively, to expose the core over a relatively large surface area, shallow angle such as an angle of 2 ° to 5 ° Is cut or shaved. In one example, the core may be exposed over a length of about 40 mm. These filaments are then placed in a mold with magnesium and boron powder as described above.

理論的に魅力的であるが、そのようなＭｇＢ２の持続的接合部は、実現するのが非常に困難であることが判明している。制限する要因の１つは、接合部の堆積されたＭｇＢ２中に見られる酸化マグネシウムの量である。酸化マグネシウムで汚染された接合部は、０Ｔの背景磁界であっても、持続的でない、すなわち超伝導でないことが分かっている。 While theoretically attractive, such MgB 2 persistent joints have proven very difficult to achieve. One limiting factor is the amount of magnesium oxide found in the deposited MgB 2 at the joint. It has been found that the junction contaminated with magnesium oxide is not persistent, i.e. not superconducting, even with a background magnetic field of 0T.

酸素は、プロセスで使用されるマグネシウム粉末に存在する酸化マグネシウムから、およびおそらくはまた炉それ自体の構造からも真空炉中に抜け出ると信じられている。酸化マグネシウムＭｇＯは、本明細書で述べる方法に従ってＭｇＢ２形成を達成するために典型的に用いられる温度をはるかに下回る温度でマグネシウムおよび酸素に解離する。 It is believed that oxygen escapes into the vacuum furnace from the magnesium oxide present in the magnesium powder used in the process, and possibly also from the structure of the furnace itself. Magnesium oxide MgO dissociates into magnesium and oxygen at temperatures well below those typically used to achieve MgB 2 formation according to the methods described herein.

ＭｇＢ２ワイヤを接合する従来の方法は、
− 接合すべきワイヤのそれぞれで少なくとも１つのＭｇＢ２フィラメントを露出させるステップと、
− 露出したＭｇＢ２フィラメントをモールド中に置くステップと、
− マグネシウムおよびホウ素粉末をモールド中に追加するステップと、
− モールド中の粉末を機械的に圧縮するステップと、
− フィラメントおよび粉末を熱処理して、接合されるワイヤのフィラメント間に延びるＭｇＢ２接合部を作成するステップとを含む。 Conventional methods of joining MgB 2 wires are:
- a step of exposing at least one MgB 2 filaments each be joined wires,
- a step of placing the MgB 2 filaments exposed into a mold,
-Adding magnesium and boron powder into the mold;
-Mechanically compressing the powder in the mold;
Heat treating the filaments and powder to create a MgB 2 joint extending between the filaments of the wires to be joined.

本発明は、この最終ステップに関する。熱処理ステップの間に、炉内のどんな遊離酸素も、マグネシウム粉末と反応してＭｇＯまたはマグネシウム−ホウ素−複合酸化物を形成する可能性が高い。   The present invention relates to this final step. During the heat treatment step, any free oxygen in the furnace is likely to react with the magnesium powder to form MgO or magnesium-boron-complex oxide.

したがって、本発明は、添付の特許請求の範囲で規定されるような、ＭｇＢ２導体間に超伝導接合部を準備するための方法に関する。 The present invention therefore relates to a method for preparing a superconducting junction between MgB 2 conductors, as defined in the appended claims.

本発明は、添付の請求項で規定されるように、接合部が形成される間、酸素が炉内の環境から効果的に除去される、ＭｇＢ２導体間に接合部を形成するための方法を提供する。 The present invention provides a method for forming a joint between MgB 2 conductors, wherein oxygen is effectively removed from the environment within the furnace while the joint is formed, as defined in the appended claims. I will provide a.

本発明の方法によると、接合部が形成される間、チタンが、好ましくはペレットの形で、炉内に提供される。チタンは、酸素のゲッターとしての役割を果たし、炉中に存在することもあるどんな酸素も、マグネシウムと反応するよりもむしろ、チタンによって優先的に捕捉されて酸化チタンになる。チタンは、酸素が接合部から迅速にかつ効果的に除去されるように、接合モールドに近接して置かれる。チタンによる遊離酸素の捕捉は、酸化マグネシウムによる接合部のどんな汚染も回避し、背景磁界強度および電流密度に容認できるほど耐性がある持続的ＭｇＢ２接合部につながる。 According to the method of the present invention, titanium is provided into the furnace, preferably in the form of pellets, while the joint is formed. Titanium serves as an oxygen getter and any oxygen that may be present in the furnace is preferentially trapped by the titanium into titanium oxide rather than reacting with magnesium. Titanium is placed in close proximity to the joining mold so that oxygen can be quickly and effectively removed from the joint. The capture of free oxygen by titanium avoids any contamination of the junction by magnesium oxide and leads to a persistent MgB 2 junction that is acceptable to background magnetic field strength and current density.

本方法での残りの段階は、変わらない。本発明の方法は、機械的圧力が接合プロセスの間維持される配置で、または機械的圧力が接合の間解放される配置で適用されてもよい。   The remaining steps in the method remain unchanged. The method of the present invention may be applied in an arrangement where mechanical pressure is maintained during the bonding process or in an arrangement where mechanical pressure is released during the bonding.

炉は、好ましくは１０−７ｂａｒ（０．０１Ｐａ）程度まで真空ポンプによって排気されてもよく、またはチタンによって捕捉される必要のある酸素の量を低減するために不活性フラッシュ装置を提供されてもよい。 The furnace may be evacuated by a vacuum pump, preferably to the order of 10 −7 bar (0.01 Pa), or provided with an inert flash device to reduce the amount of oxygen that needs to be trapped by titanium. Also good.

したがって、本発明は、ＭｇＢ２ワイヤの接合のためにＭｇＢ２形成を実現するためのマグネシウムおよびホウ素粉末の熱処理の間に存在することもあるどんな酸素も捕獲するためにチタンペレットの使用を提供する。好ましくは、高真空ポンプが、炉を排気するために提供され、これは、酸素のいくらかを除去することになる。残りの酸素は、チタンによって優先的に捕捉されることになり、酸化マグネシウムの形成を回避する。 Thus, the present invention provides the use of titanium pellets to capture any oxygen that may be present during the heat treatment of magnesium and boron powders to achieve MgB 2 formation for bonding MgB 2 wires . Preferably, a high vacuum pump is provided to evacuate the furnace, which will remove some of the oxygen. The remaining oxygen will be preferentially captured by titanium, avoiding the formation of magnesium oxide.

ＭｇＢ２フィラメント間に十分な接合部を作ることは、困難であることが分かっている。接合部は、動作温度においてさえ超伝導にならないか、または接合部は、容認できないほど低い背景磁界強度においてもしくは容認できないほど低いしきいを超える電流が通されるときに抵抗性になる（「クエンチ現象」として知られている）。
ＭｇＢ ２ ワイヤを接合するための周知の方法は、「Li et al.; “High critical current joint of MgB 2 tapes using Mg and B powder mixture as flux”; Superconductor Science Technology; Vol.21; No.2; 25017 2008-02-01 pp.1-5; ISSN:0953-2048; XP020128600」において記載されている。 Producing sufficient joints between MgB 2 filaments has proven difficult. The junction does not become superconducting even at operating temperatures, or the junction becomes resistive when a current is passed at an unacceptably low background magnetic field strength or above an unacceptably low threshold ("quenching" Known as "phenomenon").
Well-known methods for joining MgB 2 wires are described in “Li et al .;“ High critical current joint of MgB 2 tapes using Mg and B powder mixture as flux ”; Superconductor Science Technology; Vol. 21; 25017 2008-02-01 pp.1-5; ISSN: 0953-2048; XP020128600 ".

Claims (3)

接合すべきワイヤからＭｇＢ２フィラメントを露出させるステップと、
炉中で前記ＭｇＢ２フィラメントをマグネシウム粉末およびホウ素粉末の混合物にさらすステップと、
前記ＭｇＢ２フィラメントならびに前記マグネシウムおよびホウ素粉末を一緒に５４０℃を超えるまたは５４０℃程度の温度で圧縮するステップとを含む、超伝導ワイヤのＭｇＢ２フィラメント間に接合部を形成するための方法であって、
チタンが、前記炉内に提供されて、前記炉内に存在する酸素を優先的に捕捉することを特徴とする、方法。 Exposing the MgB 2 filament from the wires to be joined;
Exposing the MgB 2 filament in a furnace to a mixture of magnesium powder and boron powder;
Compressing the MgB 2 filament and the magnesium and boron powder together at a temperature above 540 ° C. or at a temperature on the order of 540 ° C. to form a joint between the MgB 2 filaments of a superconducting wire. And
Titanium is provided in the furnace to preferentially capture oxygen present in the furnace. 前記チタンは、ペレットの形で提供される、請求項１に記載の方法。   The method of claim 1, wherein the titanium is provided in the form of pellets. 前記炉は、前記方法が行われる間真空ポンプによって排気される、請求項１または請求項２に記載の方法。   The method of claim 1 or claim 2, wherein the furnace is evacuated by a vacuum pump while the method is performed.
JP2014552536A 2012-01-20 2012-11-16 Method for forming a joint between magnesium diboride conductors Expired - Fee Related JP6162148B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1200989.0A GB2498565B (en) 2012-01-20 2012-01-20 Methods for forming joints between magnesium diboride conductors
GB1200989.0 2012-01-20
PCT/EP2012/072869 WO2013107537A1 (en) 2012-01-20 2012-11-16 Methods for forming joints between magnesium diboride conductors

Publications (2)

Publication Number Publication Date
JP2015512141A true JP2015512141A (en) 2015-04-23
JP6162148B2 JP6162148B2 (en) 2017-07-12

Family

ID=45840753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014552536A Expired - Fee Related JP6162148B2 (en) 2012-01-20 2012-11-16 Method for forming a joint between magnesium diboride conductors

Country Status (7)

Country Link
US (1) US9837190B2 (en)
EP (1) EP2805362B1 (en)
JP (1) JP6162148B2 (en)
KR (1) KR101898644B1 (en)
CN (1) CN104040744B (en)
GB (1) GB2498565B (en)
WO (1) WO2013107537A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200103369A (en) * 2019-02-25 2020-09-02 강원대학교산학협력단 Joint Structure of Single Core Superconducting Cables And Manufacturing Method Thereof
KR20220046084A (en) * 2020-10-07 2022-04-14 강원대학교산학협력단 Joint Structure of Multi-filament Core Superconducting Wire And Manufacturing Method Thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498565B (en) * 2012-01-20 2014-09-17 Siemens Plc Methods for forming joints between magnesium diboride conductors
EP2879238A1 (en) * 2013-11-27 2015-06-03 Siemens Aktiengesellschaft Method for forming a superconducting connection structure and superconducting connection structure
DE102015209147A1 (en) 2015-05-19 2016-11-24 Hella Kgaa Hueck & Co. Method for parking area detection
CN107863613A (en) * 2017-09-29 2018-03-30 中国科学院电工研究所 A kind of superconducting joint and preparation method thereof
CN113036470B (en) * 2021-03-17 2022-11-29 西部超导材料科技股份有限公司 MgB2 superconducting cable joint and preparation and connection method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09174259A (en) * 1995-12-22 1997-07-08 Nippon Metal Ind Co Ltd Production of clad sheet consisting of ta and cu
WO2002095093A1 (en) * 2001-05-23 2002-11-28 International Superconductivity Technology Center, The Juridical Foundation Mgb2 single crystal and its production method, and superconductive material containing mgb2 single crystal
JP2003086265A (en) * 2001-09-12 2003-03-20 Furukawa Electric Co Ltd:The Connection part of superconducting line and its connecting method
JP2006153245A (en) * 2004-12-01 2006-06-15 Sumitomo Electric Ind Ltd Vacuum insulation pipe
US20080236869A1 (en) * 2007-03-30 2008-10-02 General Electric Company Low resistivity joints for joining wires and methods for making the same
CN101291021A (en) * 2007-11-16 2008-10-22 中国科学院电工研究所 Connecting method of MgB* superconduction in strip shape
WO2010149860A1 (en) * 2009-06-24 2010-12-29 Johannes Frantti High temperature superconductors
CA2775830A1 (en) * 2009-09-30 2011-04-07 Siemens Aktiengesellschaft Process for producing a connecting structure between two superconductors and structure for connecting two superconductors

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261934A (en) * 1978-11-30 1981-04-14 Electric Power Research Institute, Inc. Method for homogenizing mixed oxide nuclear fuels
ATE313521T1 (en) * 2001-03-12 2006-01-15 Leibniz Inst Fuer Festkoerper MAGNESIUM DIBORIDE-BASED POWDER FOR THE PRODUCTION OF SUPERCONDUCTORS, METHOD FOR THE PRODUCTION AND USE THEREOF
KR100481234B1 (en) 2001-06-01 2005-04-07 자이단 호진 고쿠사이 초덴도 산교 기쥬츠 겐큐 센타 MgB2 BASED SUPERCONDUCTOR AND METHOD FOR PREPARATION THEREOF
EP1419538B1 (en) * 2001-07-31 2007-03-07 American Superconductor Corporation Methods and reactors for forming superconductor layers
US20060063680A1 (en) * 2002-07-26 2006-03-23 Metal Oxide Technologies, Inc. System and method for joining superconductivity tape
WO2006101255A1 (en) 2005-03-25 2006-09-28 Incorporated National University Iwate University Superconducting magnesium boride thin-film and process for producing the same
KR20100133994A (en) * 2008-03-30 2010-12-22 힐스 인크. Superconducting wires and cables and methods for producing superconducting wires and cables
US8238990B2 (en) * 2008-04-17 2012-08-07 Asg Superconductors, S.P.A. Granular superconducting joint
DE102008056824A1 (en) * 2008-11-11 2010-05-20 H.C. Starck Gmbh Inorganic compounds
US8812069B2 (en) * 2009-01-29 2014-08-19 Hyper Tech Research, Inc Low loss joint for superconducting wire
DE102009010112B3 (en) * 2009-02-21 2010-09-02 Bruker Eas Gmbh A method for superconducting bonding of MgB 2 superconducting wires over a MgB 2 matrix of a Mg-infiltrated boron powder compact
IT1398934B1 (en) 2009-06-18 2013-03-28 Edison Spa SUPERCONDUCTIVE ELEMENT AND RELATIVE PREPARATION PROCEDURE
GB2498565B (en) * 2012-01-20 2014-09-17 Siemens Plc Methods for forming joints between magnesium diboride conductors

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09174259A (en) * 1995-12-22 1997-07-08 Nippon Metal Ind Co Ltd Production of clad sheet consisting of ta and cu
WO2002095093A1 (en) * 2001-05-23 2002-11-28 International Superconductivity Technology Center, The Juridical Foundation Mgb2 single crystal and its production method, and superconductive material containing mgb2 single crystal
US20030146417A1 (en) * 2001-05-23 2003-08-07 Romonovich Lee Sergey Mgb2 single crystal and its production method, and superconductive material containing mgb2 single crystal
JP2003086265A (en) * 2001-09-12 2003-03-20 Furukawa Electric Co Ltd:The Connection part of superconducting line and its connecting method
JP2006153245A (en) * 2004-12-01 2006-06-15 Sumitomo Electric Ind Ltd Vacuum insulation pipe
US20070209516A1 (en) * 2004-12-01 2007-09-13 Sumitomo Electric Industries, Ltd. Vacuum heat insulation tube
US20080236869A1 (en) * 2007-03-30 2008-10-02 General Electric Company Low resistivity joints for joining wires and methods for making the same
JP2008258158A (en) * 2007-03-30 2008-10-23 General Electric Co <Ge> Low-resistivity joint for joining wires and methods for making the same
CN101291021A (en) * 2007-11-16 2008-10-22 中国科学院电工研究所 Connecting method of MgB* superconduction in strip shape
WO2010149860A1 (en) * 2009-06-24 2010-12-29 Johannes Frantti High temperature superconductors
JP2012530678A (en) * 2009-06-24 2012-12-06 ヨハンネス フランッティ High temperature superconductor
CA2775830A1 (en) * 2009-09-30 2011-04-07 Siemens Aktiengesellschaft Process for producing a connecting structure between two superconductors and structure for connecting two superconductors
JP2013506946A (en) * 2009-09-30 2013-02-28 シーメンス アクチエンゲゼルシヤフト Method for fabricating a connection structure between two superconductors and structure for connecting two superconductors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WEIJIUN YAO ET.AL: "A Superconducting Joint Technique for MgB2 Round Wires", IEEE TRANS APPL SUPERCOND., vol. 19, no. 3, JPN6016034534, 2009, pages 2261 - 2264, XP011262026, ISSN: 0003395598 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200103369A (en) * 2019-02-25 2020-09-02 강원대학교산학협력단 Joint Structure of Single Core Superconducting Cables And Manufacturing Method Thereof
KR102187155B1 (en) 2019-02-25 2020-12-04 강원대학교산학협력단 Joint Structure of Single Core Superconducting Cables And Manufacturing Method Thereof
KR20220046084A (en) * 2020-10-07 2022-04-14 강원대학교산학협력단 Joint Structure of Multi-filament Core Superconducting Wire And Manufacturing Method Thereof
KR102429818B1 (en) 2020-10-07 2022-08-05 강원대학교산학협력단 Joint Structure of Multi-filament Core Superconducting Wire And Manufacturing Method Thereof

Also Published As

Publication number Publication date
GB2498565A (en) 2013-07-24
US9837190B2 (en) 2017-12-05
US20140364318A1 (en) 2014-12-11
KR20140116529A (en) 2014-10-02
EP2805362B1 (en) 2016-12-28
CN104040744B (en) 2017-06-16
WO2013107537A1 (en) 2013-07-25
GB201200989D0 (en) 2012-03-07
GB2498565B (en) 2014-09-17
CN104040744A (en) 2014-09-10
JP6162148B2 (en) 2017-07-12
KR101898644B1 (en) 2018-10-04
EP2805362A1 (en) 2014-11-26

Similar Documents

Publication Publication Date Title
JP6162148B2 (en) Method for forming a joint between magnesium diboride conductors
JP2004047441A (en) Manufacturing method for superconducting wire material using mgb2 hollow filament as base material
JP2003086265A (en) Connection part of superconducting line and its connecting method
WO2003035575A1 (en) A METHOD INCLUDING A HEAT TREATMENT OF MANUFACTURING SUPERCONDUCTING WIRES BASED ON MgB2
KR101931136B1 (en) Joints with very low resistance between superconducting wires and methods for making such joints
US10714238B2 (en) Joint for superconducting wire
JP4602237B2 (en) High performance MgB2 superconducting wire and manufacturing method
WO2005104144A1 (en) Process for producing mgb2 superconductive wire excelling in critical current performance
JP4556343B2 (en) Manufacturing method of long composite
CN111868849A (en) Method for manufacturing insulated superconducting wire
DeFouw et al. In situ synthesis of superconducting MgB 2 fibers within a magnesium matrix
JP3759696B2 (en) Multi-core BSCCO room temperature superconductor
US20050176587A1 (en) Process for producing nb3a1 superconductive wire rod and nb3a1 superconductive wire rod produced by the process
JP3716304B2 (en) Manufacturing method of Nb3Ga extra fine multi-core superconducting wire
JPH02256108A (en) Surperconductive metal matrix complex and its manufacture
KR102429818B1 (en) Joint Structure of Multi-filament Core Superconducting Wire And Manufacturing Method Thereof
JP2011014304A (en) Superconducting wire rod
JP2008276973A (en) Manufacturing method of oxide superconductive wire material, and oxide superconductive wire material
JPH04315709A (en) Manufacture of v3ga superconductive wire rod
JP2003151387A (en) Manufacturing method of superconductive composite material and superconductive composite material
JPS63141214A (en) Manufacture of superconductive wire
JPS6366890B2 (en)
JPH08339726A (en) Manufacture of nb3sn system superconductive wire
JPH0252365B2 (en)
JPH06275152A (en) Manufacture of nb3sn superconducting wire

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20150902

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160825

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160912

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20161017

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170515

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170614

R150 Certificate of patent or registration of utility model

Ref document number: 6162148

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees